[pjpitbull]

I never knew this but found it online figured id share with you all.

How to determine what size toploader you need for your thick cards.

Here is the best way to figure out how thick of a holder you need for a given card. Take a stack of common cards and lay them on top of each other.
1 regular card = 20-35 Point - Use all standard Top Loaders, screw downs or magentics
3 regular cards = 55 Point or 1.5mm
4-5 regular cards = 75-100 Point or 2.5mm
6-8 regular cards = 130-140 Point or 3.5mm
9-12 regular cards = 180-190 Point or 5mm
13 regular cards plus =240 Point (mega patch cards)